Performed either during foreplay or sex, Titillatio is when you're titty fucking the woman in question and, assuming her boobs are big enough, she also performs fellatio on you while your penis is between her breasts. A very good time-saving tool for quickies.
Hey baby, i know we're having sex and all but I have to be back at work in ten minutes. Your boobs are pretty big. While you're down there why don't you do a titillatio? That way we can kill two birds with one stone.
n., Excitement, usually Sexual or romantic, causing a hard on of the pecker and/or clit and nipples, but it may occur with other forms of thrill-seeking, such as extreme sports, extreme amusement park rides, or space monkey.
The occurrence of tit as the first syllable of titillation is purely coincidental.
v. form, titillate.
The road between Merced Falls and Hornitos, where it passes around the buttes, has such perfect hills for a roller coaster ride that little kids get titillation riding in a car driving on it.
Some tweens crave titillation, but wouldn't dare to do anything risqué with their own bodies, so they'll wait until there's a lot of people and pants someone else.